If you look at the compositions of a poet like Fear Flatha Ó Gnímh who was based for most of his life in Antrim in east Ulster, the poems that he writes at the time that the Ulster Plantation was in progress are quite depressing reading in some ways.

He was very traumatised by The Flight of the Earls which saw the Gaelic chiefs such as Hugh O’Neill, Hugh O’Donnell, Maguire and others, leave Ulster for good and go to the Continent. A poet like Fear Flatha Ó Gnímh O’Gnieve laments the condition of Ireland now that those chieftains have gone, and focuses on his sense of loss but doesn’t try to blame anybody in particular for that loss. He explains O’Neill’s downfall as being self-induced: that if O’Neill had been more subservient to God, had shown greater respect for his principles, I suppose, that this wouldn’t have happened; if he hadn’t got so over-mighty, that he wouldn’t have fallen.

It’s explained largely in religious terms that - to quote a translation of the poem -

"Oh people of Uí Néill, if you had been submissive to God,
who could have overthrown you?".

That was the kind of attitude that Fear Flatha Ó Gnímh conveyed: there is no sense in his poetry that in any way outsiders - newcomers of any sort - are to blame for the circumstances of the Gaelic Irish in Ulster in the early 17th century. The explanations for the decline of their society are self-contained explanations that don’t look at all to put the blame on anybody else, on any outsiders.